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Income Taxes (Narrative) (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
Apr. 30, 2018 | Oct. 31, 2018 | Oct. 31, 2017 | Oct. 31, 2018 | Oct. 31, 2017 | Dec. 29, 2017
Income Tax [Line Items] |  |  |  |  |  |
Effective income tax rate |  | 27.20% |  |  | 25.40% |
Tax Cuts and Jobs Act of 2017, net tax benefit | $ 1,000 | $ 700 | $ 2,300 |  |  |
Excess tax benefit related to stock-based compensation |  |  |  | $ 100 |  |
RSI Home Products, Inc. |  |  |  |  |  |
Income Tax [Line Items] |  |  |  |  |  |
Deferred income taxes |  |  |  |  |  | $ 67,542

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